diff --git a/themes/classic/messenger/icons/btn1.gif b/themes/classic/messenger/icons/btn1.gif
index e50b92b22bb7..a6d2f19de890 100644
Binary files a/themes/classic/messenger/icons/btn1.gif and b/themes/classic/messenger/icons/btn1.gif differ
diff --git a/themes/classic/messenger/messengercompose/messengercompose.css b/themes/classic/messenger/messengercompose/messengercompose.css
index bb1f947cf5dc..6ebb7701c613 100644
--- a/themes/classic/messenger/messengercompose/messengercompose.css
+++ b/themes/classic/messenger/messengercompose/messengercompose.css
@@ -84,20 +84,19 @@
 } 
 
 #spellingButton {
-  list-style-image: url("chrome://editor/skin/icons/btn1.gif");
-  -moz-image-region: rect(101px 23px 122px 0);
+  -moz-image-region: rect(378px 23px 399px 0px);
 }
 
 #spellingButton:hover {
-  -moz-image-region: rect(101px 46px 122px 23px);
+  -moz-image-region: rect(378px 46px 399px 23px);
 }
 
 #spellingButton:hover:active {
-  -moz-image-region: rect(122px 23px 143px 0);
+  -moz-image-region: rect(378px 69px 399px 46px);
 }
 
 #spellingButton[disabled="true"] {
-  -moz-image-region: rect(122px 46px 143px 23px) !important;
+  -moz-image-region: rect(378px 92px 399px 69px) !important;
 }
 
 #button-save {